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TI-2026-73590 Aliases CVE-2026-105442GHSA-5q74-39hp-qp43

Insecure deserialization in IBM WebSphere Application Server

Priority LOW 39CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

IBM WebSphere Application Server 8.5 and 9.0, and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10, are affected. Insecure deserialization of untrusted data (CWE-502) in the messaging service lets a remote attacker cause a denial of service without authentication.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMWebSphere Application Server8.5; 9.0—No fix listedCNA
IBMWebSphere Application Server - Liberty17.0.0.3 – 26.0.0.10—No fix listedCNA
  • WebSphere Application Server VendorIBM Affected 8.5; 9.0 Fixed in — No fix listed CNA
  • WebSphere Application Server - Liberty VendorIBM Affected 17.0.0.3 – 26.0.0.10 Fixed in — No fix listed CNA

CPE names CNA · 6

CPEVersionsRoleVendor
cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*8.5—IBM
cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*8.5.0—IBM
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*9.0—IBM
cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*9.0.0—IBM
cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*17.0.0.3—IBM
cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*26.0.0.10—IBM
  • cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:* Versions 8.5 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:* Versions 8.5.0 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:* Versions 9.0 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:* Versions 9.0.0 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:* Versions 17.0.0.3 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:* Versions 26.0.0.10 — ·IBM

Remediation

The sources list no fixed version for IBM WebSphere Application Server. The sources list no fixed version for IBM WebSphere Application Server - Liberty.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-105442
  2. 2026-10-13 Alias added: GHSA-5q74-39hp-qp43
  3. 2026-10-14 Priority changed: MEDIUM → LOW
  4. 2026-10-15 CISA SSVC decision points changed

References

Patch 1

  • TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-23774 IBM Aspera Faspex code execution KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-03794 Improper authentication in IBM Data Risk Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-03441 Code injection in IBM Planning Analytics KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
See all 9711 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences